Lesson 2

Next, once you have spotted the ninja, you must identify his or her (yes, chicks can be ninjas too, watch out husbands) weapons

Once you have done this, you must figure out a way to defend against ALL of the weapons, and don't let the ninja get to any object that can be picked up and not something that isn't bolted to the floor. Just remember this, a ninja can kill you with one strand of his or her hair.